UK households with children born in specific years can benefit from a combined £29,000 in tax-free ISA allowances, according to financial education specialist Antonia Medlicott, founder and managing director of Investing Insiders. This opportunity arises when a child turns 18, allowing parents to leverage both junior ISA and adult ISA limits in the same tax year.
How the £29,000 Allowance Works
Before a child reaches 18, parents can open a junior ISA with a tax-free contribution limit of £9,000 per year. Upon turning 18, the junior ISA automatically converts into an adult ISA, which comes with its own £20,000 annual allowance. Crucially, this £20,000 allowance applies regardless of how much has already been contributed to the junior ISA in the same tax year. This means that in the year the child turns 18, they effectively have access to £29,000 in tax-free ISA contributions.
Example Scenario
Medlicott provides an example: if a child's birthday is on November 14, parents can contribute up to £9,000 into the junior ISA until November 13. From the birthday onwards, the £20,000 adult ISA allowance becomes available. By contributing the full £9,000 each year from birth and then £29,000 in the 18th year, total deposits could reach £182,000 tax-free. Assuming an average annual growth rate of 7%, the pot could be worth approximately £348,000 by the child's 18th birthday.
Key Considerations
Medlicott emphasises that this additional allowance cannot be carried forward, so maximising its use is crucial. HMRC has confirmed that these limits will remain frozen until at least 2030, giving parents of children turning 18 before then ample opportunity to benefit. She advises parents to keep a running total of all contributions to avoid exceeding limits and incurring HMRC charges, especially when multiple family members contribute.
Advice for Grandparents
Grandparents looking to contribute should consider inheritance tax implications. Gifts exceeding the annual £3,000 gifting allowance remain part of the estate for seven years, potentially making them liable for inheritance tax. Medlicott recommends discussing larger contributions with a financial adviser.
